For rental owners and fleet managers
Do your machines actually make money?
Most rental businesses price by copying the yard down the road, then find out a year later that half the fleet never covered its costs. This tool works it out before you commit — what you need to charge, the month the machine pays for itself, and what happens to the deal when it sits idle.
- Free · no sign-up
- Runs in your browser
- No email wall before the answer
- 40 currencies
What you get back
You put in three things you already know: what the machine cost, what you plan to charge, and how busy you expect it to be. Everything else — depreciation, financing, insurance, maintenance, overhead, tax, resale value — is built for you from the model data.
Built in, free, no sign-up
Don't know what to put in the boxes? Say it in a sentence.
Tell it what the machine cost, what you plan to charge and how busy it will be. It picks the model, fills the figures in, opens the cost assumptions and tells you whether the deal works — and you can undo the lot with one click.
Guides: how the numbers actually work
Seven plain-English guides, each answering its question in the first paragraph and then working through a real machine with real figures. Written for rental owners and fleet managers, not for accountants.
Who built this
This is not a software company’s lead magnet. It was built by someone who spent more than fifteen years in heavy equipment, including running a rental fleet, and started as an internal tool for deciding which machines to buy and what to charge for them. There is no subscription and nothing to sell you. If you want a second pair of eyes on a fleet or a rate card, say so on the contact page.
Questions rental owners ask
How much should I charge to rent out equipment?
There is no single percentage that works, whatever you have been told. The rate that makes sense depends on what the machine cost, how it is financed, what maintenance and insurance run to, how long you will keep it, what it is worth when you sell it, and how many days a year it is actually on hire.
The calculator works backwards from those figures to the lowest rate that still clears the return you want, then suggests a rate above it that leaves you some room.
How do I know if a machine is paying for itself?
Your accounts show one profit figure for the whole business, so a strong machine can hide a weak one indefinitely. Modelling a single unit on its own gives you two things the company P&L cannot: its return on investment per year, and the month its cumulative cash turns positive.
If that month falls after the point you plan to sell the machine, it never pays for itself.
What utilisation rate should I be targeting?
Utilisation on its own does not tell you much, because a busy machine on a poor rate still loses money. What matters is the pair together. The what-if grid shows the return at several rates crossed with several utilisation levels, so instead of chasing a single benchmark you can see which combinations actually work for the machine in front of you.
Should I buy the machine or keep hiring it in?
Compare the payback month and the lifetime return against what hiring in would cost you over the same period. If a machine only pays back in month 55 of a 60 month life, ownership is carrying nearly all of the risk for a very thin reward — and any drop in utilisation wipes it out.
Do I need accounting knowledge to use this?
No, and that is the point of it. You enter what the machine costs, what you plan to charge and how busy you expect it to be. Depreciation, financing, overhead, tax and resale are handled for you.
The answer arrives as four plain pass-or-fail checks. The profit & loss, balance sheet and cashflow sit underneath if you want them, but you do not have to read a single one.
Is it really free? What is the catch?
It is free, there is no account, and there is no email wall in front of the result. You only give an email address if you want the full PDF report sent to you. We built the model for our own use and it costs us almost nothing to let other people use it.
Do you store the numbers I type in?
No. The calculator runs entirely in your browser and nothing is sent anywhere while you work. There are two exceptions, both of which you choose. The chat assistant reads the figures on screen when you send it a message, so it can answer about your deal instead of asking you to retype everything, and we keep those conversations for 90 days before they are deleted automatically. And if you ask for the PDF report, your inputs and results are sent so we can build the file, and we keep a copy of that report so we can answer questions about it. It is never shared with anyone.
Which currencies does it support?
Forty, converted at live exchange rates. The base figures are held exactly, so switching between currencies and back never drifts the numbers.
Last reviewed: 19 August 2026